下列基团优先次序排列正确的是

下列基团优先次序排列正确的是
A、-COOH＞-CHO＞-OH＞-CH3
B、-OH＞-COOH＞-CHO＞-CH3
C、-CHO＞-OH＞-CH3＞-COOH
D、-COOH＞-CHO＞-CH3＞-OH
E、-CH3＞-CHO＞-COOH＞-OH
正确答案：-OH＞-COOH＞-CHO＞-CH3